But tilapia DO live in that area - and like the warm weather/water.
In fact, if memory serves, they will only breed if the water temp
is 100-something degrees plus.
.
113 degrees fahrenheit for Blue Tilapia - the most cold tolerant variety.
(I just looked it up out of curiosity...)
Hadn’t heard of the tilapia speculation. Of course, the salient point for the story is not the species but the number of the fish.